Are you sure about the color if you don’t mind me asking? If the DF sees the MQA stream it should indicate purple.
I can’t get my DF to work with MQA on my new 11" iPad Pro. The stream gets very unstable with cracks, pops and glitches. Also the DF lights struggles and flashes between purple and magenta. I’m also using an USB-C to USB dongle to connect the DF to the iPad.
When I connect the DF to my iPhone with the Lightning to USB 3 Camera Adapter MQA plays without hickups